tv pkgs: mimic krebs' simple overlay

1 files changed, 314 insertions, 0 deletions

diff --git a/tv/5pkgs/simple/q/default.nix b/tv/5pkgs/simple/q/default.nix
new file mode 100644
index 000000000..2e7aa5cf2
--- /dev/null
+++ b/tv/5pkgs/simple/q/default.nix
@@ -0,0 +1,314 @@
+{ pkgs, ... }:
+with import <stockholm/lib>;
+let
+  q-cal = let
+
+    # Maximum width of cal's output.
+    calwidth = 23;
+
+    # Number of space characters between two calendars.
+    hspace = 2;
+
+    # Return number of columns required to print n calenders side by side.
+    need_width = n:
+      assert n >= 1;
+      n * calwidth + (n - 1) * hspace;
+
+    pad = ''{
+      ${pkgs.gnused}/bin/sed '
+            # rtrim
+            s/ *$//
+
+            # delete last empty line
+            ''${/^$/d}
+          ' \
+        | ${pkgs.gawk}/bin/awk '{printf "%-${toString calwidth}s\n", $0}' \
+        | ${pkgs.gnused}/bin/sed '
+              # colorize header
+              1,2s/.*/&/
+
+              # colorize week number
+              s/^[ 1-9][0-9]/&/
+            '
+    }'';
+  in ''
+    cols=$(${pkgs.ncurses}/bin/tput cols)
+    ${pkgs.coreutils}/bin/paste \
+        <(if test $cols -ge ${toString (need_width 3)}; then
+          ${pkgs.utillinux}/bin/cal -mw \
+              $(${pkgs.coreutils}/bin/date +'%m %Y' -d 'last month') \
+            | ${pad}
+        fi) \
+        <(if test $cols -ge ${toString (need_width 1)}; then
+          ${pkgs.utillinux}/bin/cal -mw \
+            | ${pkgs.gnused}/bin/sed '
+                # colorize day of month
+                s/\(^\| \)'"$(${pkgs.coreutils}/bin/date +%e)"'\>/&/
+              ' \
+            | ${pad}
+        fi) \
+        <(if test $cols -ge ${toString (need_width 2)}; then
+          ${pkgs.utillinux}/bin/cal -mw \
+              $(${pkgs.coreutils}/bin/date +'%m %Y' -d 'next month') \
+            | ${pad}
+        fi) \
+      | ${pkgs.gnused}/bin/sed '
+          s/^\t//
+          s/\t$//
+          s/\t/${lpad hspace " " ""}/g
+        '
+  '';
+
+  q-isodate = ''
+    ${pkgs.coreutils}/bin/date \
+        '+%Y-%m-%dT%H:%M:%S%:z'
+  '';
+
+  # Singapore's red is #ED2E38
+  q-sgtdate = ''
+    TZ=Asia/Singapore \
+    ${pkgs.coreutils}/bin/date \
+        '+%Y-%m-%dT%H:%M:%S%:z'
+  '';
+
+  q-gitdir = ''
+    if test -d .git; then
+      #git status --porcelain
+      branch=$(
+        ${pkgs.git}/bin/git branch \
+          | ${pkgs.gnused}/bin/sed -rn 's/^\* (.*)/\1/p'
+      )
+      echo "± $LOGNAME@''${HOSTNAME-$(${pkgs.nettools}/bin/hostname)}:$PWD .git $branch"
+    fi
+  '';
+
+  q-intel_backlight = ''
+    cd /sys/class/backlight/intel_backlight
+    </dev/null exec ${pkgs.gawk}/bin/awk '
+      END {
+        getline actual_brightness < "actual_brightness"
+        getline max_brightness < "max_brightness"
+        getline brightness < "brightness"
+        printf "intel_backlight %d%% %d/%d\n" \
+            , actual_brightness / max_brightness * 100 \
+            , actual_brightness \
+            , max_brightness
+      }
+    '
+  '';
+
+  q-power_supply = let
+    power_supply = pkgs.writeBash "power_supply" ''
+      set -efu
+      uevent=$1
+      eval "$(${pkgs.gnused}/bin/sed -n '
+        s/^\([A-Z_]\+=[0-9A-Za-z_-]*\)$/export \1/p
+      ' $uevent)"
+      case $POWER_SUPPLY_NAME in
+        AC)
+          exit # not battery
+          ;;
+      esac
+      exec </dev/null
+      exec ${pkgs.gawk}/bin/awk '
+        function die(s) {
+          printf "%s: %s\n", name, s
+          exit 1
+        }
+
+        function print_hm(h, m) {
+          m = (h - int(h)) * 60
+          return sprintf("%dh%dm", h, m)
+        }
+
+        function print_bar(n, r, t1, t2, t_col) {
+          t1 = int(r * n)
+          t2 = n - t1
+          if (r >= .42)     t_col = "1;32"
+          else if (r >= 23) t_col = "1;33"
+          else if (r >= 11) t_col = "1;31"
+          else              t_col = "5;1;31"
+          return sgr(t_col) strdup("■", t1) sgr(";30") strdup("■", t2) sgr()
+        }
+
+        function sgr(p) {
+          return "\x1b[" p "m"
+        }
+
+        function strdup(s,n,t) {
+          t = sprintf("%"n"s","")
+          gsub(/ /,s,t)
+          return t
+        }
+
+        END {
+          name = ENVIRON["POWER_SUPPLY_NAME"]
+
+          charge_unit = "Ah"
+          charge_now = ENVIRON["POWER_SUPPLY_CHARGE_NOW"] / 10^6
+          charge_full = ENVIRON["POWER_SUPPLY_CHARGE_FULL"] / 10^6
+
+          current_unit = "A"
+          current_now = ENVIRON["POWER_SUPPLY_CURRENT_NOW"] / 10^6
+
+          energy_unit = "Wh"
+          energy_now = ENVIRON["POWER_SUPPLY_ENERGY_NOW"] / 10^6
+          energy_full = ENVIRON["POWER_SUPPLY_ENERGY_FULL"] / 10^6
+
+          power_unit = "W"
+          power_now = ENVIRON["POWER_SUPPLY_POWER_NOW"] / 10^6
+
+          voltage_unit = "V"
+          voltage_now = ENVIRON["POWER_SUPPLY_VOLTAGE_NOW"] / 10^6
+          voltage_min_design = ENVIRON["POWER_SUPPLY_VOLTAGE_MIN_DESIGN"] / 10^6
+
+          #printf "charge_now: %s\n", charge_now
+          #printf "charge_full: %s\n", charge_full
+          #printf "current_now: %s\n", current_now
+          #printf "energy_now: %s\n", energy_now
+          #printf "energy_full: %s\n", energy_full
+          #printf "energy_full: %s\n", ENVIRON["POWER_SUPPLY_ENERGY_FULL"]
+          #printf "energy_full: %s\n", ENVIRON["POWER_SUPPLY_ENERGY_FULL"] / 10^6
+          #printf "power_now: %s\n", power_now
+          #printf "voltage_now: %s\n", voltage_now
+
+          if (current_now == 0 && voltage_now != 0) {
+            current_now = power_now / voltage_now
+          }
+          if (power_now == 0) {
+            power_now = current_now * voltage_now
+          }
+          if (charge_now == 0 && voltage_min_design != 0) {
+            charge_now = energy_now / voltage_min_design
+          }
+          if (energy_now == 0) {
+            energy_now = charge_now * voltage_min_design
+          }
+          if (charge_full == 0 && voltage_min_design != 0) {
+            charge_full = energy_full / voltage_min_design
+          }
+          if (energy_full == 0) {
+            energy_full = charge_full * voltage_min_design
+          }
+
+          if (charge_now == 0 || charge_full == 0) {
+            die("unknown charge")
+          }
+
+          charge_ratio = charge_now / charge_full
+
+          out = out name
+          out = out sprintf(" %s", print_bar(10, charge_ratio))
+          out = out sprintf(" %d%", charge_ratio * 100)
+          out = out sprintf(" %.2f%s", charge_now, charge_unit)
+          if (current_now != 0) {
+            out = out sprintf("/%.1f%s", current_now, current_unit)
+          }
+          out = out sprintf(" %d%s", energy_full, energy_unit)
+          if (power_now != 0) {
+            out = out sprintf("/%.1f%s", power_now, power_unit)
+          }
+          if (current_now != 0) {
+            out = out sprintf(" %s", print_hm(charge_now / current_now))
+          }
+
+          print out
+        }
+      '
+    '';
+  in ''
+    for uevent in /sys/class/power_supply/*/uevent; do
+      ${power_supply} "$uevent" || :
+    done
+  '';
+
+  q-virtualization = ''
+    echo "VT: $(${pkgs.systemd}/bin/systemd-detect-virt)"
+  '';
+
+  q-wireless = ''
+    for dev in $(
+      ${pkgs.iw}/bin/iw dev \
+        | ${pkgs.gnused}/bin/sed -n 's/^\s*Interface\s\+\([0-9a-z]\+\)$/\1/p'
+    ); do
+      inet=$(${pkgs.iproute}/bin/ip addr show $dev \
+        | ${pkgs.gnused}/bin/sed -n '
+            s/.*inet \([0-9]\+\.[0-9]\+\.[0-9]\+\.[0-9]\+\).*/\1/p
+          ') \
+        || unset inet
+      ssid=$(${pkgs.iw}/bin/iw dev $dev link \
+        | ${pkgs.gnused}/bin/sed -n '
+            s/.*\tSSID: \(.*\)/\1/p
+          ') \
+        || unset ssid
+      echo "$dev''${inet+ $inet}''${ssid+ $ssid}"
+    done
+  '';
+
+  q-online = ''
+    if ${pkgs.curl}/bin/curl -s google.com >/dev/null; then
+      echo 'online'
+    else
+      echo offline
+    fi
+  '';
+
+  q-thermal_zone = ''
+    for i in /sys/class/thermal/thermal_zone*; do
+      type=$(${pkgs.coreutils}/bin/cat $i/type)
+      temp=$(${pkgs.coreutils}/bin/cat $i/temp)
+      printf '%s %s°C\n' $type $(echo $temp / 1000 | ${pkgs.bc}/bin/bc)
+    done
+  '';
+
+  q-todo = ''
+    TODO_file=$HOME/TODO
+    if test -e "$TODO_file"; then
+      ${pkgs.coreutils}/bin/cat "$TODO_file" \
+        | ${pkgs.gawk}/bin/gawk -v now=$(${pkgs.coreutils}/bin/date +%s) '
+            BEGIN { print "remind=0" }
+            /^[0-9]/{
+              x = $1
+              gsub(".", "\\\\&", x)
+              rest = substr($0, index($0, " "))
+              rest = $0
+              sub(" *", "", rest)
+              gsub(".", "\\\\&", rest)
+              print "test $(${pkgs.coreutils}/bin/date +%s -d"x") -lt "now" && \
+                echo \"\x1b[38;5;208m\""rest esc "\"\x1b[m\" && \
+                (( remind++ ))"
+            }
+            END { print "test $remind = 0 && echo \"nothing to remind\"" }
+          ' \
+        | {
+          # bash needed for (( ... ))
+          ${pkgs.bash}/bin/bash
+        }
+    else
+      echo "$TODO_file: no such file or directory"
+    fi
+  '';
+
+in
+# bash needed for <(...)
+pkgs.writeBashBin "q" ''
+  set -eu
+  export PATH=/var/empty
+  (${q-todo}) || :
+  if [ "$PWD" != "$HOME" ]; then
+    (HOME=$PWD; ${q-todo}) || :
+  fi
+  echo
+  ${q-cal}
+  echo
+  ${q-isodate}
+  ${q-sgtdate}
+  (${q-gitdir}) &
+  (${q-intel_backlight}) &
+  (${q-power_supply}) &
+  (${q-virtualization}) &
+  (${q-wireless}) &
+  (${q-online}) &
+  (${q-thermal_zone}) &
+  wait
+''